| 2012/08 | 2013/08 | 2014/08 | 2015/08 | 2016/08 | 2017/08 | 2018/08 | 2019/08 | 2020/08 | |
| 現金同等物 | - | 19,195 | 18,747 | 13,859 | 17,667 | 18,781 | 22,057 | 12,509 | 12,193 |
| 有価証券 | - | 11,214 | 12,116 | 12,987 | 11,435 | 12,226 | 7,567 | 7,539 | 7,821 |
| 商品及び製品 | - | 19,819 | 21,523 | 21,723 | 20,884 | 20,671 | 18,042 | 18,909 | 18,961 |
| 流動資産合計 | - | 63,684 | 64,392 | 59,304 | 61,428 | 61,961 | 58,086 | 50,034 | 52,196 |
| 有形固定資産 | - | 143,640 | 151,890 | 161,485 | 161,861 | 161,950 | 166,078 | 169,355 | 166,526 |
| 投資有価証券 | - | 4,244 | 4,804 | 3,553 | 462 | 533 | 547 | 572 | 519 |
| 固定資産合計 | - | 170,912 | 180,045 | 184,673 | 181,425 | 181,391 | 183,564 | 187,271 | 185,150 |
| 総資産 | - | 234,596 | 244,437 | 243,978 | 242,854 | 243,353 | 241,650 | 237,305 | 237,346 |
| 短期借入金 | - | - | - | - | - | - | - | - | 5,000 |
| 流動負債合計 | - | 41,056 | 41,942 | 37,144 | 32,717 | 29,394 | 32,677 | 33,729 | 40,382 |
| 固定負債合計 | - | 7,090 | 8,380 | 9,076 | 8,906 | 14,098 | 14,685 | 14,877 | 15,378 |
| 総負債 | - | 48,146 | 50,323 | 46,221 | 41,623 | 43,492 | 47,362 | 48,607 | 55,761 |
| 資本金及び資本剰余金 | - | 35,877 | 35,877 | 35,877 | 35,877 | 35,877 | 35,877 | 35,877 | 35,877 |
| 利益剰余金 | - | 155,983 | 162,871 | 169,976 | 175,268 | 177,484 | 167,549 | 170,089 | 156,398 |
| 株主資本 | 177,989 | 186,449 | 194,114 | 197,756 | 201,231 | 199,860 | 194,288 | 188,698 | 181,584 |